package net.lshimokawa.pap6;

public class Calculadora {

	public final int sumar(int a, int b) {
		return a+b;
	}

	public final int restar(int a, int b) {
		return a-b;
	}

	public final int multiplicar(int a, int b) {
		return a*b;
	}

	public final int dividir(int a, int b) {
            if (b==0)
            {
                return -1;
            }
            else
            {
		return a/b;
            }
	}
}
